/* 顶部粘性定位 */
.countent {
    max-width: 1100px;
    min-width: 910px;
    margin: 0 auto;
    box-sizing: border-box;
    position: relative;
}

.nxgd-countent-db {
    height: 70px;
    line-height: 70px;
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 999;
}

.cf::after {
    content: '';
    display: block;
    clear: both;
}

.dblog {
    float: left;
}

.nxgd-nav {
    position: absolute;
    right: 5px;
    top: 0;
    font-size: 0;

}

.nxgd-nav li {
    float: left;
    font-weight: bold;
    font-size: 14px;
}

.nxgd-nav li a {
    vertical-align: middle;
}

.nxgd-nav li a:hover:not(.c-btn) {
    color: #3291f6;
}

.nxgd-nav li:first-child a {
    padding: 0 10px;
    margin: 0;
    color: #3291f6;
}

.nxgd-nav li:nth-of-type(n+2) a {
    margin-right: 20px;
}

.nxgd-nav li:last-child a {
    margin: 0;
}

.nxgd-nav .c-btn {
    width: 80px;
    height: 40px;
    display: inline-block;
    line-height: 40px;
    text-align: center;
    background-color: #3291f6;
    color: #fff;
    border-radius: 8px;
    transition: color, 1s;
}

.nxgd-nav .c-btn:hover {
    background-color: #000;
}

/* 粘性定位结束 */